Oil drain plug socket for a wrench assembly

Tools – Wrench – screwdriver – or driver therefor – Handle clutched to head

Reexamination Certificate

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Details

C081S124300, C081S177850, C081S125000

Reexamination Certificate

active

11220467

ABSTRACT:
A ratchet wrench, the ratchet wrench having a head portion defining a substantially cylindrical inner engaging surface and a plurality of ribs extending radially inward therefrom. The socket includes a first portion defining a plurality of depressions axially aligned with the longitudinal axis in an outer surface thereof, the first portion being releasably received by the substantially cylindrical inner engaging surface, and a second portion including a cylindrical outer surface and defining a hexagonal recess therein. A grip ring includes a knurled outer surface and is disposed on the second portion outer surface. A magnetic insert is received in the hexagonal recess.

REFERENCES:
patent: 3392767 (1968-07-01), Stillwagon, Jr.
patent: 4663998 (1987-05-01), Parsons et al.
patent: 4800786 (1989-01-01), Arnold et al.
patent: 4825732 (1989-05-01), Arnold
patent: 4836059 (1989-06-01), Arnold
patent: 4947713 (1990-08-01), Arnold
patent: 5146814 (1992-09-01), Vasichek
patent: 5199334 (1993-04-01), Vasichek et al.
patent: 5277088 (1994-01-01), Vasichek et al.
patent: 5295422 (1994-03-01), Chow
patent: 5542320 (1996-08-01), Vasichek et al.
patent: 6006630 (1999-12-01), Vasichek et al.
patent: 6761093 (2004-07-01), Chang

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